JSFiddle - React, Tailwind, and code Playground

by D7460N

HTML

<div class="header">
    <div class="siteTitle">site title</div>
    <div class="tagline">site tagline</div>
</div>
<div class="menu"></div>
<div class="main"></div>

CSS

.main{
      border: 1px solid black;  

}

.menu ~ .main{
   border: 1px red solid;  
}